Manually tightened drill chuck

Abstract

A manually tightened drill chuck includes a drill body, a nut, a front sleeve and a rear sleeve. The front sleeve is provided on the front end of the drill body with the nut being provided in the middle. A decorative sleeve is mounted on the front end of the drill body with an external peripheral surface of the nut being housed in an inner sleeve by shrink fit. At least one key groove is located in the inner wall of the front sleeve. A key cooperates with the key groove. At least one locating member is provided in the lower end of the key that includes a hole. The front sleeve further defines at least one protrusion that corresponds to the position of the hole for snapping into the hole. Accordingly, the stability of the front sleeve and the rear sleeve without radial vibration is achieved.

1. A manually tightened drill chuck, said drill chuck comprising:
 a drill body; 
 a nut; 
 a front sleeve and a rear sleeve, said front sleeve being provided on a front end of said drill body, said nut being provided in a middle of said drill body; 
 a decorative sleeve being mounted on the front end of said drill body; 
 wherein an external peripheral surface of said nut is housed in an inner sleeve by shrink fit with at least one key groove being located in an inner wall of said front sleeve, and a key cooperating with said key groove being defined in a lower end of an inner sleeve, said key being located inside said key groove; and 
 at least one locating member being provided in a lower end of said key, said locating member includes a hole, and said front sleeve defines further at least one projection corresponding to the position of the hole wherein the projection may be snapped in said hole. 
 
   
   
     2. The manually tightened drill chuck according to  claim 1 , wherein a plurality of key grooves are provided in said inner wall of the front sleeve with the key grooves being distributed uniformly along the circumference thereof. 
   
   
     3. The manually tightened drill chuck according to  claim 1 , wherein said locating member extends downwardly and extends from the front end of said drill body, and further forms a bevel edge in order to cover the front end of said drill body, instead of the decorative sleeve. 
   
   
     4. The manually tightened drill chuck according to  claim 1 , wherein a plurality of ridges and grooves are provided on the external circular surfaces of both said front sleeve and said rear sleeve, respectively. 
   
   
     5. A manually tightened drill chuck comprising:
 a drill body; 
 a nut; 
 a front sleeve positioned on a front end of said drill body with said nut being provided in substantially a middle portion of said drill body, said front sleeve includes at least one projection extending therefrom; 
 an external peripheral surface of said nut being housed in an inner sleeve by shrink fit; 
 at least one key groove being located in an inner wall of said front sleeve with a key cooperating with said key groove being defined in a lower end of an inner sleeve; and 
 at least one locating member being provided in a lower end of said key, said locating member including a hole, and said at least one projection of said front sleeve corresponding to the position of the hole wherein the projection may be snapped in said hole. 
 
   
   
     6. The manually tightened drill chuck according to  claim 5 , wherein a plurality of key grooves are provided in said inner wall of the front sleeve with the key grooves being distributed uniformly along the circumference thereof. 
   
   
     7. The manually tightened drill chuck according to  claim 5 , wherein said locating member extends downwardly and extends from the front end surface of said drill body, and further forms a bevel edge in order to cover the front end of said drill body. 
   
   
     8. The manually tightened drill chuck according to  claim 5 , wherein a plurality of ridges and grooves are provided on the external circular surfaces of both said front sleeve and a rear sleeve, respectively. 
   
   
     9. A manually tightened drill chuck comprising:
 a body; 
 a nut; 
 a front sleeve being provided on a front end of said body with said nut being provided in substantially a middle portion of said body; 
 an external peripheral surface of said nut being housed in an inner sleeve by shrink fit; 
 at least one key groove is located in an inner wall of said front sleeve with a key cooperating with said key groove being defined in a lower end of said inner sleeve, said key being located inside said key groove; 
 at least one locating member includes a hole with the front sleeve defining at least one projection corresponding to the position of the hole wherein the projection may be snapped in said hole for securing enabling torque transmission. 
 
   
   
     10. The manually tightened drill chuck according to  claim 9 , wherein a plurality of key grooves are provided in said inner wall of the front sleeve with the key grooves being distributed uniformly along the circumference thereof. 
   
   
     11. The manually tightened drill chuck according to  claim 9 , wherein said locating member extends downwardly and extends from the front end of said drill body, and further forms a bevel edge in order to cover the front end of said body. 
   
   
     12. The manually tightened drill chuck according to  claim 9 , wherein a plurality of ridges and grooves are provided on the external circular surfaces of both said front sleeve and a rear sleeve, respectively.